An orphan traveled to the ancient times in a different world and became a prince. He thought he would enjoy it like a king, but he found that life in ancient times was really bad. He could only use his knowledge of time travel to slowly improve it. Later, he discovered that another time traveler was from a different era and was a revolutionary. The two had a collision of ideas. I am a newbie, please support me.
Concept: time travel, collision of ideas